The Fifth Doctor and Turlough are drawn to the planet Sarn by Kamelion, where they encounter the Master in one of his diabolical plans to tap the power of the Numismaton gas.

[edit] Plot

On the desert world of Sarn, robed natives worship the fire god Logar and follow the Chief Elder, Timanov, who demands obedience. Those who dissent are known as Unbelievers, and two of them, Amyand and Roskal, cause unrest when they claim to have ventured to the top of the sacred fire mountain but not found Logar. One of the Sarns, Malkon, is known as the Chosen One because of the unusual double triangle symbol burnt into his skin: he is also unusual for having been found as a baby on the slopes of the fire mountain.

The same triangle symbol is found on a metal artefact uncovered in an archaeological dig in Lanzarote overseen by Professor Howard Foster. His stepdaughter Perpugilliam (usually called "Peri") Brown is bored with the dig and wants to go travelling in Morocco and when he seeks to prevent this she steals the strange artefact and tries to swim for freedom. Fortunately for her the TARDIS has landed nearby – responding to a distress call sent by the strange artefact - and Turlough sees her drowning and rescues her. Going through her possessions as she recovers he finds the artefact and acknowledges the same triangle symbol is burnt into his own flesh. The Doctor returns to the TARDIS after attempting to triangulate the source of the signal being emitted by the artefact, and the ship dematerialises, seemingly on its own. It soon arrives on Sarn and the Doctor and Turlough set off to explore.

The Doctor's other companion, the android Kamelion, has meanwhile made mental contact with its old controller, the Master, who attempts to assert his control and change Kamelion's appearance from that of Howard. Kamelion tries to warn Peri of the Master but the Time Lord succeeds in gaining control. She flees the TARDIS with the creature in pursuit as the rumblings of the volcanoes of Sarn gather ferocity.

In the Sarn colony Timanov has damned the Unbelievers to be sacrificed to appease Logar and stop the tremors. They flee to a secret base in the mountains which is filled with seismological apparatus and which the Doctor and Turlough stumble across. The Doctor informs the Unbelievers that the tunnels, which have been their refuge are volcanic vents which will soon fill with molten lava. It is also established that Turlough is of the same race as those who colonised the planet, and when the indigenous people see his Misos Triangle, they greet him as a second Chosen One. Turlough realises Malkon may be his brother and becomes even more worried when Peri turns up and mentions the Master.

Another important figure in Sarn mythology is the Outsider, a promised prophet, and the Master/Kamelion fulfils this role admirably. He convinces Timanov of the appropriateness of harsh action and when the Doctor arrives with the Unbelievers they are all seized for burning. However, Malkon and Peri arrive shortly afterward and end this assault, though not before Malkon has been injured. Turlough is aghast when he finds his relative has been shot and the Doctor presses him for as much information as he has on the strange circumstances of Sarn. It seems it is a long abandoned Trion colony planet, and that Turlough, a Trion, suspects some of his family were sent here after a revolution against the hereditary leading clans of his homeworld. He supposes his father died in a crash but that Malkon survived, while he himself was sent in exile to Brendan School In England, overseen by a Trion agent masquerading as a solicitor in Chancery Lane.

The Master/Kamelion has meanwhile seized Peri and uses her to transport a black box into the control room of his TARDIS. It contains a miniature Master – the real thing – who has been shrunken and transformed by a disastrous experiment with his Tissue Compression Eliminator. The Master thus re-established the psychic link with Kamelion to gain the power of movement and has manoeuvred the robot to Sarn so that he can take advantage of the restorative powers of the Numismaton gas within the fire mountain.

Turlough realises the imminent volcano bursts will destroy the Sarn colony so nobly uses a functioning communication unit to get in touch with Trion and plead for a rescue ship to evacuate Sarn. In doing so he abandons his own freedom. When the ship later arrives, the Sarns all depart, along with Turlough and Malkon. They have both been pardoned in an amnesty issued by the new Sarn government. The only one to remain on the planet and face the erupting volcanoes is Timanov, now sure to die, his faith in tatters.

The Doctor meanwhile succeeds in weakening the Master's hold of Kamelion, and interrupts the numismaton experiment. He adds calorific gas to the numismaton surge and seemingly burns the Master alive. The Doctor also puts the terminally wounded Kamelion out of its misery. He returns to the TARDIS with a heavy heart, but with a new companion, Peri, for company.

[edit] Cast notes

• Mark Strickson has also reprised the role of Turlough in the audio plays by Big Finish Productions and penned the introduction to the spin-off novel Turlough and the Earthlink Dilemma (1986).
• Promotional photographs taken during production include a shot of Peter Davison wearing a tuxedo and holding a gun, with Nicola Bryant standing next to him in a bikini, in a parody of James Bond.^[2]

[edit] Continuity

• This was the last story to feature Mark Strickson as Turlough. He returned for the Fifth Doctor's regeneration scene in The Caves of Androzani. Turlough was the last male companion of the Doctor on screen until Adam Mitchell joined the TARDIS crew briefly at the end of the Ninth Doctor episode "Dalek" in 2005. Strickson has said that had he realised that the next season would involve stories consisting of two 50-minute episodes, he would not have departed from the series. He felt that Turlough was not receiving enough development because the 25-minute format necessitated more frequent cliffhangers and therefore less character development.
• This serial was originally intended as the swan song for Anthony Ainley as the Master since his contract with the show had come to an end, hence the "death" of the character in the numismaton flames at the story's climax. As a deliberate tease for the audience, the Master's truncated final line is "Won't you even show mercy to your own -", with him apparently being killed by the gas just as he is about to reveal the true nature of his relationship to the Doctor. However, the Master reappeared in the following season's The Mark of the Rani without explanation as to how he survived the flames. Script Editor Eric Saward cut from The Mark of the Rani the explanation for the Master's survival provided by writers Pip and Jane Baker but the explanation is in their novelisation of the serial.)
• It was decided that because of the climate of Lanzarote, where the serial was filmed, the cast would have to alter their usual costumes. Although Peter Davison started the story wearing his cricketer outfit, for the rest of the story, he wore a different pair of trousers with question mark braces and a beige floral waistcoat. Strickson shed his usual school uniform in favour of a blue pin-stripe shirt and tan shorts with a pair of swim briefs underneath. Nicola Bryant also wore a pink bikini beneath her clothes to which she stripped down for a couple of scenes, the first time a companion had been seen to wear a two-piece swimsuit since Sarah Jane Smith in the Third Doctor story Death to the Daleks.
• Peri's mother and her friend Mrs Van Gysegham, both mentioned in this story, appear in the 2006 audio drama The Reaping.
• Although Kamelion dies in this story, he makes a posthumous reappearance in the audio Circular Time.
• This is the only story in the Peter Davison era in which Janet Fielding made no appearance as Tegan Jovanka though she is briefly mentioned in episode 1. She left the TARDIS crew in the previous serial Resurrection of the Daleks, and appears in the Fifth Doctor's regeneration sequence in following adventure, The Caves of Androzani, as a hallucination.

[edit] Production

Serial details by episode

Episode	Broadcast date	Run time	Viewership (in millions)
"Part One"	23 February 1984 (1984-02-23)	24:26	7.4
"Part Two"	24 February 1984 (1984-02-24)	24:20	6.1
"Part Three"	1 March 1984 (1984-03-01)	23:57	7.4
"Part Four"	2 March 1984 (1984-03-02)	24:44	7.0
[3][4][5]

• The working title for this story was The Planet of Fear.
• The decision to make Peri the daughter of a wealthy American family was inspired by the popularity of the Dallas and Dynasty soap operas.
• Nicola Bryant was cast in part because she held dual citizenship in the United States - because she was married to an American - and the UK.^[6]

[edit] In print

Doctor Who book
Planet of Fire
Series	Target novelisations
Release number	93
Writer	Peter Grimwade
Publisher	Target Books
Cover artist	Andrew Skilleter
ISBN	0-426-19940-5
Release date	14 February 1985
Preceded by	Frontios
Followed by	The Caves of Androzani

A novelisation of this serial, written by Peter Grimwade, was published by Target Books in October 1984. A prologue juxtaposing the crash of the vessel Professor Foster is salvaging with the crash of the Trion ship carrying Turlough's family to Sarn opens the novelisation. The Master's teasing last line " Won't you save your own..." is removed.

[edit] Broadcast and VHS release

• This story was released on VHS in September 1998.
• The DVD was released in June 2010, with commentary by Peter Davison, Nicola Bryant, Mark Strickson and Fiona Cumming, as part of the box set Kamelion Tales along with The King's Demons. It also contained a Special Edition edit of the story overseen by director Fiona Cumming.

[edit] References

[edit] External links

• Planet of Fire at BBC Online
• Planet of Fire at Doctor Who: A Brief History Of Time (Travel)
• Planet of Fire at the Doctor Who Reference Guide

Reviews

• Planet of Fire reviews at Outpost Gallifrey
• Planet of Fire reviews at The Doctor Who Ratings Guide

Target novelisation

• On Target — Planet of Fire